Design Cross Section

7/31/2019 Design Cross Section

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Drawing the Top SurfaceSpecify an area on your screen to draw the template.

1 On the command line, enter ZOOM and then enter C for the Center option, clickanywhere in the drawing to specify the center point, and then enter 20 for theMagnification.

2 Turn off any running object snaps. Type OSNAP at the command line to display the ObjectSnap tab of the Drafting Settings dialog box, and then clear the Object Snap On checkbox and click OK.Use the following steps to draw the top surface of the template, beginning at the

roadway centerline, drawing to the left (negative direction), and then straight down, andthen to the right (positive direction) back to the centerline.3 On the Cross Sections menu, select Draw Template, and then select a point near the

middle of your screen for the starting point of the template.4 Enter G for the Grade option, enter -2 for the grade percentage, and then enter -4.25 m

for the Change in offset.5 Enter R for the Relative option, enter 0 (zero) m for the Change in offset, and then enter

-0.15 m for the Change in elevation.6 Enter G for the Grade option, enter 2 for the grade percentage, and then enter 4.25 m for

the change in offset.7 Press ENTER twice.

The Draw Template command takes into account the vertical drawing scale andexaggerates the drawn template componts accordingly.

Click here to see an illustration of the top surface.

Drawing the CurbDraw the curb component of the template.

1 On the Cross Sections menu, select Draw Template, and then use an EndpointOsnap to select the start of the curb at the upper-left corner of the top surface."Grade" is the current option displayed at the command line.

2 Enter -6 for the Grade percentage, and then enter -0.3 m for the Change inoffset.3 Enter R for the Relative option, enter -0.05 m for the Change in offset, and

then enter 0.15 m for the Change in elevation.4 Enter -0.15 m for the Change in offset, and then enter 0 (zero) m for theChange in elevation.5 Enter 0 (zero) m for the Change in offset, and then enter -0.4 m for the Changein elevation.6 Enter 0.5 m for the Change in offset, enter 0 (zero) m for the Change in

elevation, and then enter C to close the curb polyline.7 Press ENTER.

Click here to see an illustration of the curb.

Drawing the Granular Base SurfaceDraw the granular base surface component of the template.1 On the Cross Sections menu, select Draw Template, and then use an Endpoint

Osnap to select the start of the subgrade at the lower-right corner of the topsurface.

2 Enter P for the Points option, and then use an Endpoint Osnap to select thelower-left corner of the top surface.

3 Use an Endpoint Osnap to select the lower-right corner of the curb.4 Use an Endpoint Osnap to select the lower-left corner of the curb.5 Enter R for the Relative option, enter 0 (zero) m for the Change in offset, and

then enter 0.12 m for the Change in elevation.6 Enter -0.1 m for the Change in offset, and then enter 0 m for the Change inelevation.


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7 Enter 0 m for the Change in offset, and then enter -0.3 m for the Change inelevation.8 Enter G from the Grade option, enter 2 for the Grade percentage, and then

enter 4.85 m for the Change in offset.9 Press ENTER twice.

Click here to see an illustration of the granular base surface.

Drawing the Grass Buffer Slope SurfaceDraw the grass buffer slope surface component of the template.1 On the Cross Sections menu, select Draw Template, and then use an Endpoint

Osnap to start drawing the grass buffer slope at the upper- left corner of thecurb.

2 Enter 2 for the Grade percentage, and then enter -1.5 m for the Change inoffset, and then enter C to close the grass buffer slope polyline back on itself.

3 Press ENTER.Click here to see an illustration of the grass buffer slope surface.This completes the drawing of all of the template components.This concludes the template drawing lesson. In the next lesson, you'll learn

about defining templates.LESSON 26: Defining TemplatesDefine templates by assigning materials to each template component, andthen specifying the reference point, connection points out, and datum.To work through this lesson follow these steps

1 Start Autodesk Land Desktop if you have not already done so.2 On the File menu, click Open to display the Open Drawing: Project Based dialogbox.

The default location folder for project files is c:\Land Projects 2007. If youopted to install these files in another location instead, specify the appropriateproject path.

3 From the Project Name list, select TUTORIAL3, from the Select Project Drawinglist, select Lesson-26.dwg, and then click OK.

4 Display the Civil Design menus by selecting Civil Design from the Workspacestoolbar. If the Workspaces toolbar is not displayed, click Projects Workspaces.

Working through these lessons will result in alteration of the project files.Backup copies of these project files can be found in the c:\Program Files\Autodesk Land Desktop 2007\Landtut folder.If this lesson has been previously run, copy these unaltered project files tothe \Land Projects 2007 folder when starting a new tutorial session to ensurethat the sequence outlined in each lesson can be followed properly.

Specifying the Template Storage Path for Editing TemplatesSpecify the template storage path.1 On the Cross Sections menu, select Set Template Path to display the TemplatePath dialog box.

2 Verify that the User Preferences Cross Section Templates root path check boxis selected, and then verify that the Root path is C:\Documents and Settings\AllUsers\Application Data\Autodesk\Autodesk Land Desktop2007\R17.0\Data\tplates.

3 Enter Tutorial for the Path, and then click OK to continue.


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Selecting a Material TableSelect a material table with the names of the construction materials that will beassigned to the template components.1 On the Cross Sections menu, click Templates Edit Material Table to display the

Material Table Editor dialog box.2 In the Table section, from the Table list, select client_a.mat, and then click OK.

Defining an Urban Template

Define an symmetrical urban template for existing template entities. Theurban template is the top template in the current drawing view.1 On the Cross Sections menu, click Templates Define Template.2 Use an Endpoint Osnap to select the upper-right end of the top surface at the roadway

centerline for the reference point.3 Press ENTER to accept the default, Yes, for a symmetrical template.4 Use a crossing selection set to select all of the template surfaces, and then press ENTER.

Use the following steps to define the template curb, buffer slope, asphalt, and granularbase surfaces.5 Press ENTER to accept the default, Normal, for the first surface highlighted, the topsurface.6 As the Surface Material Names dialog box is displayed, select Asphalt, and then click OK.7 Press ENTER to accept the default, Normal, for the second surface highlighted, the curb.8 As the Surface Material Names dialog box is displayed, select Curb, and then click OK.9 Press ENTER to accept the default, Normal, for the third surface highlighted, the granularbase.10 As the Surface Material Names dialog box is displayed, select Granular Base, and thenclick OK.11 Press ENTER to accept the default, Normal, for the fourth surface highlighted, the grassbuffer slope.12 As the Surface Material Names dialog box is displayed, select Buffer Slope, and then clickOK.

Use the following steps to define the connection point out and datum points along the

bottom of the template.13 Use an Endpoint Osnap to select the upper-left end of the buffer slope for the connectionpoint out.14 Press ENTER to accept the default, 1, for the Datum number.15 Use an Endpoint Osnap to select the upper-left end of the buffer slope for the first datumpoint.16 Use Endpoint Osnaps to continue selecting points, tracing a line around the bottom of the

template towards the roadway centerline, and then finishing at the lower-right end of thesubgrade surface.

17 Press ENTER to finish selecting datum points and display the Attach Subassemblies dialogbox, and then click OK to continue.

18 Press ENTER to accept the default, Yes, for saving the template, and then enter Template1 for Template name.

19 Enter No when prompted to define another template. The completes the urban template definition process.

Importing TemplatesImport the rural template into the drawing.

1 On the View menu, click Named Views to display the View dialog box. Under Name, select3, click Set Current, and then click OK.

2 On the Cross Sections menu, click Templates Import Template to display the TemplateLibrarian dialog box.3 From the Selection list, select Template2, and then click OK.

4 Specify an insertion point for the template, and then press ENTER to accept the default,Fill, for the Shoulder display. The subgrade surfaces are drawn with temporaryvectors.


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Click here to see an illustration of the rural template. This concludes the template definition lesson. In the next lesson, you'll learn about pointcodes and template editing.

Viewing Template Connection Points and Point Codes1 On the command line, enter ZOOM and then enter C for the Center option, click near the

middle of the current drawing view to specify the center point, and then enter 15 for themagnification.

2 On the Cross Sections menu, click Templates Edit Template to display the TemplateLibrarian dialog box.3 From the Selection list, select T1a, and then click OK.4 Specify an insertion point for the template in the center of the viewing area, enter D for

the Display option, and then enter C for the Connection points option.

Click hereto see an illustration of the connection points.

5 Enter R for the Redraw option, and then enter P for the Points option

The connection points out and the roadway centerline reference point havebeen automatically assigned point codes which are displayed with Xs andnumbers drawn with temporary vectors.Adding Point Codes to the TemplateIn order to identify additional critical points on the template, add point codesto the edge of pavement and bottom of the subgrade surface on both sides.

1 Press ENTER to accept the default, Exit, to return to the main Edit Template menu.2 Enter E for the Edit surface option, enter P for the Points option, and then enter A for theAdd points option.

Use the following steps to select both edge of pavement points and create a new pointcode for them.

3 Use an Endpoint Osnap to select the upper-left end of the asphalt surface.4 As the Template Points Codes dialog box is displayed, confirm that client_a.pcd is the

current point code table name.5 In the Point Codes section, click New to display the New Point Code dialog box.6 Enter 25 for the Point code and EOP for the Description.7 Click OK to return to the Template Points Codes dialog box, and then click OK.

8 Use an Endpoint Osnap to select the upper-right end of the asphalt surface.9 As the Template Points Codes dialog box is displayed, from the Point Codes list, select 25

EOP, and then click OK.Use the following steps to select both bottom-of-subgrade points and create a new point

code for them.

10 Use an Endpoint Osnap to select the lower-left end of the subgrade surface.11 As the Template Points Codes dialog box is displayed, from the Point Codes section, click

New to display the New Point Code dialog box.12 Enter 26 for the Point code and BOS for the Description.13 Click OK to return to the Template Points Codes dialog box, and then click OK.14 Use an Endpoint Osnap to select the lower-right end of the subgrade surface.


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15 As the Template Points Codes dialog box is displayed, in the point codes list, select 26BOS, and then click OK.

Click here to see an illustration of the assigned edge of pavement and subgrade point codes.

Viewing Cross SectionsSections to display the first cross section in the station range.

Cross sections are drawn on your screen with temporary vectors. You cannot use AutoCADcommands to zoom, pan, or snap to points. Use the dedicated View/Edit Sections commands toview and edit cross sections.Click

here to see an illustration of the cross section at station 0+00.

2 Enter V for the View option to display the Template View Settings Editor dialog box.3 In the Toggles section, select the Point codes and Grid text check boxes, and then clear

the Top surface and ROW check boxes.4 In the Miscellaneous Values section, enter 2 for the Vertical factor, and then click OK.5 Press ENTER to accept the default, Next, to advance to the next cross section.

Information for each cross section, including the current station, is displayed on thecommand line.Click here

to see an illustration of the cross section at station 0+22.16.6 Enter P for the Previous option to return to the previous cross section.7 Enter Z for the Zoom option, and then press ENTER to accept the default, In, to zoom in

on the cross section.Next, use the Window option to view the right side of the template.8 Enter W for the Window option, and then select the first and second points to specify the

lower-left and upper-right limits of the zoom window.Click here


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to see an illustration of the cross section window view.9 Enter A for the All option to view the entire cross section and automatically exit the Zoomoption.

Next, take a look at the actual design parameters for the slopes, ditches, catch points,and volumes applied to the cross section at this particular station.

10 Enter A for the Actual option to view the Actual Control Parameters dialog box.11 When you have finished reviewing the actual control parameters, click OK.

Editing Cross SectionsEdit a cross section by applying a different template at station 0+60 where the alignmentintersects an off ramp.

1 Enter S for the Station option, and then enter 60 to advance to that cross section.2 Enter E for the Edit option, and then enter C for the Control option and to display the

Control Editor dialog box.3 Click Template Control to display the Template Control dialog box.4 Click (Template) Select to display the Template Librarian dialog box, from the Selection

list, select nocurb, and then click OK to return to the Template Control dialog box.5 Click OK to return to the Control Editor dialog box.6 Click Slopes to display the Slope Control dialog box, and then in the Left Design slopes

section, enter 0 for the Typical fill type condition.7 Click OK to return to the Control Editor dialog box, and then click OK to continue.

The left slope of the template is now perpendicular to the ground.Click here

to see an illustration of the edited cross section at station 0+60.Use the following steps to edit the cross section at station 3+75 by changing the slope to matchthe existing ground more smoothly.8 Press ENTER to accept the default, Exit, to exit the Edit option.9 Enter S for the Station option, and then enter 375 to advance to that cross section.10 Enter Z for the Zoom option, and then press ENTER twice to accept the default, In, to

zoom in on the cross section.11 Enter X to for the Exit option to exit from the Zoom option.12 Enter E for the Edit option, enter D for the Ditch option, and then enter M for the Matchslope option.13 Select a point at the upper-left corner of the template (control point 2) for the First Match

Slope Point, and then select a point where the existing ground crosses the 16 meteroffset grid line for the Second Match Slope Point.

The resulting slope value is displayed on the command line. Next, specify a new slopevalue.14 Enter 4.2 for the Slope value, and then press ENTER.

The slope is adjusted only on this cross section.


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Click here

tosee an illustration of the edited cross section at station 3+75.

15 Press ENTER to accept the default, Exit, to exit the Ditch option.16 Press ENTER to accept the default, Exit, to exit the Edit option.17 Enter X for the Exit option to end the command.

This concludes the cross section viewing and editing lesson. In the next lesson, you'lllearn about calculating cross section volume

Viewing and Editing Superelevation Cross Sections1 On the Cross Sections menu, click View/Edit Sections to display the first cross section.2 Press ENTER to accept the default, Next, until you reach station 157+20.

The roadway begins to exhibit superelevation at approximately station 157+20.Click here

to see an illustration of the cross section at station 157+20.

3 Press ENTER to accept the default, Next, until you reach station 158+85.21. The roadway reaches its maximum superelevation at station 158+85.21. You have the option of modifying superelevation parameters on a per cross section basis.Next, specify a new rollover value and a different subgrade superelevation method forthis cross section.

4 Enter E for the Edit option, and then enter C for the Control option to display the ControlEditor dialog box.

5 Click Template Control to display the Template Control dialog box, and then in theSuperelevation Rollover section, enter 0 (zero) for the Rollover value.6 In the Subgrade Superelevation section, from the Subgrade Superelevation Method list,select Parallel.7 Click OK to return to the Control Editor dialog box, and then click OK to continue.

The upper shoulder and subgrade surface are now parallel to the asphalt surface.


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Click here

to see an illustration of the cross section with parallel subgrade surfaces.

8 Enter U for the Undo option to return the cross section to its original appearance.9 Press ENTER to accept the default, Exit, to exit the Control option.10 Enter X for the Exit option to exit the command.

Creating Grading PointsAt the beginning of a grading project, you generally have certain points with fixed elevations. Forexample, you may have points where a new driveway matches an existing roadway, or you mayhave key points to define at other locations in the project. You can create these points usingvarious features of Land Desktop.

The project in this lesson consists of a rectangular parking lot with a driveway that ties into an

existing roadway. Click here for an illustration of theproject. Your first objective is to create points around the perimeter of the parking lot for buildinga surface. Before doing so, however, you need to set some parameters for new points.

1 On the Points menu, click Point Settings to display the Point Settings dialog box.2 Click the Insert tab. In the Insertion Elevation section, select the Actual Elevation option. This

ensures that points are inserted in 3D, using the actual elevation of the points stored in the pointdatabase.

3 Click the Marker tab. In the Custom Marker section, select the plus symbol (+) as the pointmarker.4 Click the Text tab. In the Color and Visibility section, clear the check box for the Number

component. In the Text Rotation box, type 45 as the rotation angle for point text. Click OK to closethe Point Settings dialog box.

5 On the Terrain menu, click Set Current Surface to display the Select Surface dialog box. Select thesurface named ExistingGround and click OK.

You can now zoom in on the driveway area to begin creating points.


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6 On the View menu, click Named Views to display the View dialog box. Under Name, select

Driveway, and click Set Current. Click OK to display aclose-up view of the driveway area.

Four points have already been created where the driveway ties into the existing roadway, as wellas along the easterly edge of the parking lot. The two points labeled PI1 and PI2 represent wherethe driveway edge would theoretically intersect the roadway edge. (PI is a commonly usedabbreviation for point of intersection.) Click here to see an illustration of the four created points.

You can now create additional points around the perimeter of the parking lot. The initial designconcept for this project is to place the driveway entrance on an upward grade of 2% and usedownward grades along each edge of the parking lot, creating a low point at the northwest corner(upper-left on the screen) of the parking lot.

7 On the Points menu, select Create Points - Slope Slope/Grade - Distance.8 Using the Node Osnap, select a beginning point at PI1 (the point created at the intersection of the

westerly driveway edge and the roadway edge). When prompted for a direction, select theintersection at PI3 (the intersection of the parking lot and westerly driveway edge).

9 Type G and press ENTER to use grades instead of slopes. Type 2.00 and press ENTER to use agrade of 2%.

10 Accept the default values for distance, number of intermediate points, offset, and ending point bypressing ENTER at each prompt. When prompted for a description, type Perimeter and pressENTER. A point with an elevation of 1006.75 is created. Press ENTER twice to terminate point creation

along this line.11 On the View menu, click Named Views to display the View dialog box. Under Name, select Parking

Lot, and click Set Current. Click OK to display the entire parking lot.

12 On the Points menu, select Create Points - Slope Slope/Grade - Distance.13 Using the Node Osnap, select a beginning point at PI3. When prompted for a direction, select the

southwest corner of the parking lot (lower left on the screen) using the End Osnap.14 Change the grade to -1.4% and press ENTER. Accept the default values for distance, number of

intermediate points, offset, ending point, and description by pressing ENTER at each prompt. Apoint with an elevation of 1004.06 is created. Press ENTER to terminate point creation along thisline.

15 Using the Node Osnap, select a beginning point at the southwest corner of the parking lot (thepoint you just created). When prompted for a direction, select the northwest corner of the parkinglot using the End Osnap.

16 Change the grade to -0.9% and press ENTER. Accept the default value for distance by pressingENTER once.17 Enter 2 for the number of intermediate points. Accept the default values for offset, description,

and ending point by pressing ENTER at each prompt. A point with an elevation of 1000.98 iscreated at the northwest corner, along with two intermediate points along the westerly edge.Press ENTER twice to terminate point creation along this line.

Points have already been created along the easterly edge of the parking lot. Now that you havecreated grading points around the perimeter of the parking lot, you can build a model of theproposed surface and create a grading object.

Creating a Grading Object with the Grading Wizardcreating a grading object from this polyline, you can assign elevations along the grading objectbased on the proposed surface (Parking1) you created previously.

1 On the Grading menu, select Slope Grading Grading Wizard.


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2 Select the polyline that represents the parking lot footprint.3 When prompted to pick a side, click anywhere outside of the parking lot. The Footprint page of the

Grading Wizard is displayed, with numerous vertices listed that define the parking lot footprint.4 In the Grading Scheme Name box, enter Parking Lot Footprint.5 In the Footprint Coordinates section, click Assign Elevations.

6 With the Set Elevations from Selected Surface option selected, select the Actual Elevations optionand select Parking1 as the surface. Click OK

. Click Next to display the Targets page.7 In the Grading Target section, select the Surface option and select ExistingGround as the surface.

Click Next to display the Slopes page.8 In the Fill Slope section, change the Slope value to 4.00. This corresponds to a 4:1(horizontal:vertical) slope ratio. Leave the cut slope at 3.00 (3:1) and click Next to display theCorners page.

9 Accept the defaults for Corner Treatment (Miter Projection) by clicking Next.10 Accept the defaults for Accuracy by clicking Next.11 On the Appearance page, verify that the colors for Cut Projections and Cut Daylight are red, and

the colors for Fill Projections and Fill Daylight are blue. Accept the Appearance values by clickingFinish.

12 Press ENTER to accept the default (No) for deleting the old entity. A grading object is created anddisplayed on the screen. Areas of fill are shown in blue, and areas of cut are shown in red.

Click here for an illustration of the grading object.

Creating an Additional Grading Object You will often need more than one grading object to adequately represent your project. In this example, abuilding pad with curbing is to be sited within the parking lot. You can create a second grading object forthe curbing based on the proposed surface that you defined previously.

1 Thaw the layer INTPARKING and make it the current layer.2 On the Grading menu, click Slope Grading Grading Wizard.3 Select the polyline that represents the curbing around the building site. (The curbing is the cyan-

colored polyline that contains arcs around the building corners.)4 When prompted to pick a side, click anywhere inside of the curbing. The Footprint page of the

Grading Wizard appears, with numerous vertices listed that define the footprint.5 In the Grading Scheme Name box, enter Building Curb.6 Click Assign Elevations.7 With the Set Elevations from Selected Surface option selected, select the Actual Elevations option

and select Parking1 as the surface. Click OK . Elevations corresponding to the Parking1 surface are assigned to the polyline vertices. Click Next

to display the Targets page.8 In the Grading Target section, select the Elevation option and select Relative. Enter an elevation of

0.50, which represents a 6-inch curb height. Click Next to display the Slopes page.9 Change the Slope values to 0.5 for both cut and fill situations. This corresponds to a nearly vertical

curb face. Click Next to display the Corners page.10 Select the Radial Projection option for corner treatment, and click Next to display the Accuracypage.11 On the Accuracy page, change the Increment Along Arc Segments setting to 1.0. Click Next to

display the Appearance page.12 Accept the defaults for Appearance by clicking Finish.13 Type Y and press ENTER to delete the old entity. A grading object is created and displayed on the

screen. A red daylight line is shown parallel with the curb line.


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Click here to see an illustration of the TIN.

7 At the command prompt, type Redraw and press ENTER to remove the TIN from the display.8 On the Terrain menu, click Create Contours to display the Create Contours dialog box.9 In the Surface box, make sure Proposed Surface is displayed. In the Intervals section, change the

names of the minor and major contours to PROPCONT-MNR and PROPCONT-MJR, respectively. Setthe Minor Interval to 1 and the Major Interval to 5. Click OK to close the dialog box.

10 When prompted to delete the old contours, press ENTER to accept the default (Yes).11 At the command prompt, type Layer and press ENTER to display the Layer Manager. Change the

color of the PROPCONT-MNR layer to red, and change the color of the PROPCONT-MJR contour tomagenta. Click OK.

12 On the Terrain menu, select Contour Labels Interior.13 When prompted to select a contour, pick one of the purple-colored major contours. Pick a label

point somewhere near the middle of the contour. Press ENTER to exit the labeling routine.

Click here to see an illustration of the proposed contours.

The preceding steps showed you how to create contours based on a surface. You can also createcontours directly from a grading object (on the Grading menu, select Slope Grading Create Contours),but the contours will only be created within the limits of the grading object. Since this project containsmultiple grading objects and breaklines, contours were created using a named surface.In addition to including breaklines when creating surfaces, you may also want to include other data suchas additional points. You can add points from an external file or points from a point group such as the onecreated in Lesson 33 to provide additional surface data, but these have been omitted for simplicity here.

This concludes the grading object surface modeling lesson. In the next lesson, you'll learn aboutanalyzing and adjusting grading designs.

Checking Drainage Patterns You can check drainage patterns of a modeled surface by using the Water Drop command, which tracesthe path that water would take across a surface.

1 At the command prompt, type Layer and press ENTER to display the Layer Manager. Freeze theexisting contour layers (CONT-MJR and CONT-MNR), and click OK.

2 On the Terrain menu, click Set Current Surface. Select Proposed Surface as the surface, and clickOK.3 On the Terrain menu, select Surface Utilities Water Drop to display the Water Drop dialog box.4 Click OK to accept the default layer of RAN-TRAIL.

5 Press ENTER to accept the default of erasing old water drops.6 Press ENTER to accept the default of placing tick marks at the beginning of each path.7 Select several points in the parking lot area to create water drop paths. Press ENTER when you arefinished.


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8 At the command prompt, type Layer and press ENTER to display the Layer Manager. Change thecolor of the RAN-TRAIL layer to cyan, and click OK.

Click here for an illustration of the water drop paths. Note that a low point occursnear the northeasterly corner of the building, where water would be trapped by the two intersecting curblines. This would require either a curb opening to allow the water to pass through on the surface, or adrainage inlet to collect this water and convey it to an underground storm sewer. Using the Object Viewer

You can use the Object Viewer to display a perspective view of the surface. To provide a color-codeddisplay of the surface, you can display the surface as banded 3D faces.

1 On the Terrain menu, select Surface Display Banding - 3D Faces to display the Surface ElevationShading Settings dialog box.

2 In the Number of Ranges box, enter 5, and click Auto Range. Click OK twice to accept the valuesfor range limits and range definitions, and return to the Surface Elevation Shading Settings dialogbox.

3 Click OK to close the Surface Elevation Shading Settings dialog box.4 Press ENTER to accept the default of erasing the old range view. The Range Statistics dialog box isdisplayed.

5 Click OK to close the Range Statistics dialog box.6 At the command prompt, type Layer and press ENTER to display the Layer Manager.7 Set GRADINGOBJS as the current layer.

8 Freeze all layers except the following:

n 0 (zero)n GRADINGOBJSn SRF-FLTn SRF-RNG1n SRF-RNG2n SRF-RNG3n SRF-RNG3n SRF-RNG4n SRF-RNG5

9 Click OK to continue.

Click here for an illustration of the surface in plan view.With color-coded banding now displayed, you can use the Object Viewer to change the

perspective.


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10 On the Utilities menu, click Object Viewer.11 Using a window selection mode, select all of the objects in the parking lot vicinity, and press

ENTER. The Object Viewer is displayed.12 In the list box near the top of the Object Viewer, click the down arrow and select SW Isometric

view. The surface is displayed from a 3D perspective.13 Using the controls of the Object Viewer, adjust the perspective to obtain different views of the

surface. (For more information on using the Object Viewer, refer to the online help.)

Click here for an illustration of the surface in 3D view.

Because the grading object for this project also includes the area where the driveway ties into the

existing roadway, this area was also lowered 0.3 feet and no longer matches the roadway. You canmanually adjust the two affected vertices of the grading object.

1 On the View menu, click Named Views to display the View dialog box. Under Name, selectDriveway, and click Set Current. Click OK to display the driveway.

2 Select the perimeter grading object and right-click to display the shortcut menu.3 Select Edit Vertex.4 Select the westerly point where the driveway ties into the existing roadway (circled in thefollowing illustration).

5 In the Edit Vertex dialog box, change the elevation to reflect its previous value, 1005.92 and click

OK.6 Select the perimeter grading object and right-click to display the shortcut menu.7 Select Edit Vertex.8 Select the easterly point where the driveway ties into the existing roadway (circled in thefollowing illustration).9 In the Edit Vertex dialog box, change the elevation to reflect its previous value, 1006.32 and clickOK.

The points created along the perimeter (in Lesson 33) are not associated with the grading object,and have not been lowered. You need to also adjust these elevations accordingly.

10 On the Points menu, select Edit Points Datum.11 When prompted for a change in elevation, type -0.3 and press ENTER.12 Type D for Dialog to display the Points dialog box.13 Click the Reset button at the lower-left of the dialog box to clear any previous point selection.14 Verify that Enable Filtering is selected, and that the Case Sensitive Matching check box is cleared.15 Click the Include tab.16 Select the With Full Desc Matching check box. In the adjacent text box, type Perimeter.17 Click Build List to find all points with this description and update the Point List. The Point Listshould contain points 1-2, 5-13.Note If you did not complete Lesson 33 in this tutorial, then the Point List should contain points 1-2, 5-8.

To edit all of the perimeter points, use the Check Points Modify Project command on the Points menu toadd all perimeter points in the drawing to the project database. Points numbered 14-18 in the Lesson-36.dwg file represent the perimeter points created in Lesson 33.

You don't want to edit the two driveway points that match into the existing road, so use the followingstep to exclude those two points from the selection.18 Click the Exclude tab.19 Select the With Number Matching check box, and then click the Selection Set in Drawing button.20 Select the two driveway points that match into the existing roadway and then press ENTER to

return to the Points dialog box.21 Verify that points 1 and 2 are listed in the With Number Matching edit box, and then click Build

List. The Point List should contain points 5-13 only (these numbers will be different if you did notcomplete Lesson 33).


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22Click OK to close the dialog box.

Now that you have made the necessary adjustments to the surface, you can recreate the proposedsurface and contours using the steps described in Lesson 35. You can also recalculate earthwork usingthe procedures described earlier in Lesson 36.

Click here for an illustration of the revised contours.This concludes the Autodesk Civil Design tutorial. For more information about Civil Design features, see

the online help.